Marco Polo wrote many things about the Silk Road. However, some of his information was questionable.

Did Marco Polo truly travel every step of the Silk Road as he is known, or did he unknowingly not completely follow the route?

It is said that he spent 4 years marching along the silk road to the capital of the temporal state, Beijing. He was not a native after all and there should be something that he didn't notice. If you want to know the specific information about the route, some historical records are definitely going to help.